From: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
To: linux-scsi@vger.kernel.org,
James Bottomley <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"Matthew R. Ochs" <mrochs@linux.vnet.ibm.com>,
"Manoj N. Kumar" <manoj@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org,
Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
Frederic Barrat <fbarrat@linux.vnet.ibm.com>,
Christophe Lombard <clombard@linux.vnet.ibm.com>
Subject: [PATCH v3 10/41] cxlflash: Setup AFU PASID
Date: Mon, 26 Mar 2018 11:31:44 -0500 [thread overview]
Message-ID: <1522081904-57820-1-git-send-email-ukrishn@linux.vnet.ibm.com> (raw)
In-Reply-To: <1522081759-57431-1-git-send-email-ukrishn@linux.vnet.ibm.com>
Per the OCXL specification, the maximum PASID supported by the AFU is
indicated by a field within the configuration space. Similar to acTags,
implementations can choose to use any sub-range of PASID within their
assigned range. For cxlflash, the entire range is used.
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
---
drivers/scsi/cxlflash/ocxl_hw.c | 3 +++
drivers/scsi/cxlflash/ocxl_hw.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 105712b..44688af 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -118,6 +118,9 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
dev_dbg(dev, "%s: acTag base=%d enabled=%d\n", __func__, base, count);
afu->afu_actag_base = base;
afu->afu_actag_enabled = count;
+ afu->max_pasid = 1 << acfg->pasid_supported_log;
+
+ ocxl_config_set_afu_pasid(pdev, pos, 0, acfg->pasid_supported_log);
out:
return rc;
}
diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h
index 21803b5..46de75b 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.h
+++ b/drivers/scsi/cxlflash/ocxl_hw.h
@@ -25,5 +25,6 @@ struct ocxl_hw_afu {
int afu_actag_base; /* AFU acTag base */
int afu_actag_enabled; /* AFU acTag number enabled */
+ int max_pasid; /* Maximum number of contexts */
bool is_present; /* Function has AFUs defined */
};
--
2.1.0
next prev parent reply other threads:[~2018-03-26 16:31 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-26 16:29 [PATCH v3 00/41] cxlflash: OCXL transport support and miscellaneous fixes Uma Krishnan
2018-03-26 16:29 ` [PATCH v3 01/41] cxlflash: Preserve number of interrupts for master contexts Uma Krishnan
2018-03-26 16:30 ` [PATCH v3 02/41] cxlflash: Avoid clobbering context control register value Uma Krishnan
2018-03-26 16:30 ` [PATCH v3 03/41] cxlflash: Add argument identifier names Uma Krishnan
2018-03-26 16:30 ` [PATCH v3 04/41] cxlflash: Introduce OCXL backend Uma Krishnan
2018-03-26 16:31 ` [PATCH v3 05/41] cxlflash: Hardware AFU for OCXL Uma Krishnan
2018-03-26 16:31 ` [PATCH v3 06/41] cxlflash: Read host function configuration Uma Krishnan
2018-03-26 16:31 ` [PATCH v3 07/41] cxlflash: Setup function acTag range Uma Krishnan
2018-03-26 16:31 ` [PATCH v3 08/41] cxlflash: Read host AFU configuration Uma Krishnan
2018-03-26 16:31 ` [PATCH v3 09/41] cxlflash: Setup AFU acTag range Uma Krishnan
2018-03-26 16:31 ` Uma Krishnan [this message]
2018-03-26 16:31 ` [PATCH v3 11/41] cxlflash: Adapter context support for OCXL Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 12/41] cxlflash: Use IDR to manage adapter contexts Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 13/41] cxlflash: Support adapter file descriptors for OCXL Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 14/41] cxlflash: Support adapter context discovery Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 15/41] cxlflash: Support image reload policy modification Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 16/41] cxlflash: MMIO map the AFU Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 17/41] cxlflash: Support starting an adapter context Uma Krishnan
2018-03-26 16:32 ` [PATCH v3 18/41] cxlflash: Support process specific mappings Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 19/41] cxlflash: Support AFU state toggling Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 20/41] cxlflash: Support reading adapter VPD data Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 21/41] cxlflash: Setup function OCXL link Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 22/41] cxlflash: Setup OCXL transaction layer Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 23/41] cxlflash: Support process element lifecycle Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 24/41] cxlflash: Support AFU interrupt management Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 25/41] cxlflash: Support AFU interrupt mapping and registration Uma Krishnan
2018-03-26 16:33 ` [PATCH v3 26/41] cxlflash: Support starting user contexts Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 27/41] cxlflash: Support adapter context polling Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 28/41] cxlflash: Support adapter context reading Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 29/41] cxlflash: Support adapter context mmap and release Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 30/41] cxlflash: Support file descriptor mapping Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 31/41] cxlflash: Introduce object handle fop Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 32/41] cxlflash: Setup LISNs for user contexts Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 33/41] cxlflash: Setup LISNs for master contexts Uma Krishnan
2018-03-26 16:34 ` [PATCH v3 34/41] cxlflash: Update synchronous interrupt status bits Uma Krishnan
2018-03-26 16:35 ` [PATCH v3 35/41] cxlflash: Introduce OCXL context state machine Uma Krishnan
2018-03-26 16:35 ` [PATCH v3 36/41] cxlflash: Register for translation errors Uma Krishnan
2018-03-26 16:35 ` [PATCH v3 37/41] cxlflash: Support AFU reset Uma Krishnan
2018-03-26 16:35 ` [PATCH v3 38/41] cxlflash: Enable OCXL operations Uma Krishnan
2018-03-26 16:35 ` [PATCH v3 39/41] cxlflash: Synchronize reset and remove ops Uma Krishnan
2018-03-28 14:43 ` Matthew R. Ochs
2018-03-26 16:35 ` [PATCH v3 40/41] cxlflash: Remove commmands from pending list on timeout Uma Krishnan
2018-03-28 14:50 ` Matthew R. Ochs
2018-03-26 16:35 ` [PATCH v3 41/41] cxlflash: Handle spurious interrupts Uma Krishnan
2018-03-28 15:03 ` Matthew R. Ochs
2018-03-28 21:34 ` [PATCH v3 00/41] cxlflash: OCXL transport support and miscellaneous fixes Martin K. Petersen
2018-03-29 18:35 ` Uma Krishnan
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